Ultralow Loss Adiabatic Microring Resonator With Thermal Tuning

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Abstract

We report a micro-ring resonator with adiabatic bends, non contact waveguide heaters and small bend radius. The ring has the lowest reported off resonance loss and can support 8 wavelength division multiplexed channels at 200 GHz spacing. We measure 0.49 nm/mW tuning efficiency and 0.085 dB off resonance loss.

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last seen: 2026-05-19T01:45:01.086888+00:00